Can you help on adding time using calendar method? In my layout I have a clock and sorrounds by numbers each number are setOnTouchListener. What I want to do is this if user tap on each number it will add 10 hours. e.g When user touch on number 1 so the time would become 11.
If there's other way please show it to me how.Thanks
Here's my activity code
String timeOut = "2:00";//set the time
int time1 = Integer.parseInt(timeOut); //converting the string into integer
Calendar cld = cld.getInstance();
cld.add(Calendar.HOUR, 10); //in this line here I want to add the variable time1
tetxtView.setText("You added time is equal to " + cld.getTime());
from what you are saying, I understand that the user clicked on 2 so, you need to display 12.
so just add 10 + time1 = 10+2 = 12.
String timeOut = "2:00";//set the time
int time1 = Integer.parseInt(timeOut);
Calendar cld = cld.getInstance();
cld.add(Calendar.HOUR, 10 + time1); //in this line here I want to add the variable time1
now you will see , 12 as your time.
let me know if this solves your prob..
Try this:
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");
Date date = null;
try {
date = sdf.parse("12:22");
System.out.println("Date "+date);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
calendar.add(Calendar.HOUR, 10);
System.out.println("Calendar hour "+ sdf.format(calendar.getTime())); //Just format it as i have added this line
Related
I'm quite new to Android and I want to change (I know how to set it dynamically but....)Textview Dynamically after a certain period of Days,but int the meantime keep the text posted unless changed by user or if a certain days have been reached by my program.
Well Basically I have the user to input a Date then i want my program to count days and as long as the user nor my program have intervene with the textview it will show the same text and backround color until the opposite is taken action.
here is my code:
String CurrentDate = new SimpleDateFormat("dd/MM/yyyy").format(new Date());
String FinalDate = TvDateOfService.getText().toString();
SimpleDateFormat dates = new SimpleDateFormat("dd/MM/yyyy");
Date dateinput;
Date datetwra;
//Setting dates
try {
dateinput = dates.parse(FinalDate);
datetwra = dates.parse(CurrentDate);
//Comparing dates
long difference = Math.abs(dateinput.getTime() - datetwra.getTime());
long differenceDates = difference / (24 * 60 * 60 * 1000);
//Convert long to String
String dayDifference = Long.toString(differenceDates);
//Calendar Instance to Add 89 Days for Service Period Between Dates!!
Calendar cal1 = Calendar.getInstance();
cal1.add(Calendar.DATE, 90);
Date ServicePeriod = cal1.getTime();
Calendar cal2 = Calendar.getInstance();
cal2.add(Calendar.DATE, 80);
Date DaysBeforeEnd = cal2.getTime();
do {
tvStatus.setBackground(getApplicationContext().getResources().getDrawable(R.drawable.textview_backround_green));
}while (dateinput.before(DaysBeforeEnd));
do {
tvStatus.setText("something");
tvStatus.setBackground(getApplicationContext().getResources().getDrawable(R.drawable.textview_backround_yellow));
}while (dateinput.after(DaysBeforeEnd));
do {
tvStatus.setText("something else");
tvStatus.setBackground(getApplicationContext().getResources().getDrawable(R.drawable.textview_backround_red));
}while (dateinput.after(ServicePeriod));
It looks like you're trying to use a for loop and wait a certain number of days - it would be most beneficial to the phone's battery if you used AlarmManager
https://developer.android.com/trai.../scheduling/alarms.html
I am calculating time difference between two dates and time but its restuning invalid difference.
here's my sample date and code to calculate the difference.
loginTime=2016-01-24 12:04:30.16
expiryTime = 2016-01-24 13:04:30.16
SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
Date now = new Date();
try {
Date startDate = simpleDateFormat.parse(loginTime);
Date expireDate = simpleDateFormat.parse(expiryTime);
// String temCurrentDate = new SimpleDateFormat("yyyy-MM-dd").format(now);
// Date currentDate = new SimpleDateFormat("yyyy-MM-dd").parse(temCurrentDate);
// String day_of_week = new SimpleDateFormat("EEEE").format(now);
long difference =startDate.getTime()- expireDate.getTime();
int hour = (int) difference / (60 * 60 * 1000);
} catch (ParseException e) {
e.printStackTrace();
}
Difference between this time is 1 hour but i am getting 11 or 13. Please tell where i am going wrong in this.
Spelling error in your variable:
simpleDateFormat.parse(expiryTime);
Does not match: ExpiryTime = 2016-01-24 13:04:30.16
That's the whole problem.
public static final String inputFormat = "HH:mm";
private Date date;
private Date dateCompareOne;
private Date dateCompareTwo;
LINE 5:
private String compareStringOne = String.valueOf(SetTimeActivity.intFromTimeH)+ ":"+ String.valueOf(SetTimeActivity.intFromTimeM) ;
LINE 6:
private String compareStringTwo = String.valueOf(SetTimeActivity.intToTimeH) + ":"+ String.valueOf(SetTimeActivity.intToTimeM);
SimpleDateFormat inputParser = new SimpleDateFormat(inputFormat, Locale.US);
private void compareDates()
{
Calendar now = Calendar.getInstance();
int hour = now.get(Calendar.HOUR_OF_DAY);
int minute = now.get(Calendar.MINUTE);
date = parseDate(hour + ":" + minute);
dateCompareOne = parseDate(compareStringOne);
dateCompareTwo = parseDate(compareStringTwo);
if (!(dateCompareOne.before( date ) && dateCompareTwo.after(date))) {
....
I am trying to check if current time falls between the specified time. For that I am converting the specified time into strings first (in Line5 & Line6). Even though I get the integer values correct, the string formed always shows "0:0".
Also, the year is shown as 1970 (The date & the day shown are wrong as well).
I need to get the current time. What am I doing wrong?
private Date parseDate(String date) {
try {
return inputParser.parse(date);
} catch (java.text.ParseException e) {
return new Date(0);
}
}
The parseDate() function returns the time elapsed since the 1st of January 1970. This is known as the Unix Epoch, and it's how all time is represented in Unix computers. By running the parseDate function on a string containing just hours and minutes, you're creating a Date object which represents a time HH:mm past the first of January 1970.
Your code is using a really odd way of getting the current time. Converting a Calendar to two ints, then to a string and finally parsing back to a Date is going to be inefficient and open you up to all sorts of needless errors.
When you initialise a new Date object it is automatically assigned the time of initialisation. Therefore:
Date d = new Date();
would result in d being the moment of initialisation (that is, this year, month, day, hour, minute, second and microsecond). Then you can just use Date.after() and Date.before().
If you still want to do it via the Calendar method, then you'd be better served by:
cal = Calendar.getInstance();
Date d = cal.getTime();
It may be that you've got other issues, but it's worth doing it properly first. When you pass data by writing it as a string (especially when it's time related, with all sorts of ambiguities about what "12" actually represents) you lose all the advantages that language typing gives you.
this code help you
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE); if (c.get(Calendar.AM_PM) == Calendar.AM)
am_pm = "AM";
else if (c.get(Calendar.AM_PM) == Calendar.PM)
am_pm = "PM";
// Calendar c = Calendar.getInstance();
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss a");
String formattedDate = df.format(c.getTime());
Toast.makeText(this, formattedDate, Toast.LENGTH_SHORT).show();
If you already work with Date objects why not using the Date.after(...) and Date.before(...) methods.
Been confusing.. Like if we are comparing time, string is definitely not recommended... But if it is in the format of (HH:mm:ss). how should i compare them to do something?
For example:
Target1: 9:00:00
Target2: 23:00:00
how to do the logic for comparison where the input is larger than Target1 and smaller than Target2?
if(input > Target1 && input < Target2){
//do statement A
}else{
//do statement B
}
so if my input time is 10:00:00, it should run statement A
and if input time is 23:01:00, it should run statement B
how should i do that? is larger than (>) and smaller than (<) appropriate in time format?
Given them as string, you can convert them to a Date object from a SimpleDateFormat.
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
The easiest way is to convert them to the amount of milliseconds by doing
long time1 = sdf.parse(Target1).getTime();
long time2 = sdf.parse(Target2).getTime();
long inputTime = sdf.parse(input).getTime();
This way you are essentially doing a integer comparison, and you can forget about all the Date Time business.
if(inputTime > time1 && inputTime < time2)
SimpleDateFormat df=new SimpleDateFormat("hh:mm:ss");
Date d1=df.parse(dateToPars);
d1.after(otherTimeYouWantTocompare); OR
d1.before(otherTimeYouWantTocompare);
But you have to provide the time in the mentioned format
you can calculate diffrent using calender function .getTimeInMillis(), and get diffrent of 2 diffrent time , here you need to set only your specific time in Calender and make comparision with it
try{
Calendar calender = Calendar.getInstance();
Calendar calDb = Calendar.getInstance();
Calendar matchd = Calendar.getInstance();
mYear = calender.get(Calendar.YEAR);
mMonth = calender.get(Calendar.MONTH);
mDay = calender.get(Calendar.DAY_OF_MONTH);
mendYear = calDb.get(Calendar.YEAR);
mendMonth = calDb.get(Calendar.MONTH);
mendDay = calDb.get(Calendar.DAY_OF_MONTH);
// Here you can change day values
calDb.set(Calendar.DAY_OF_MONTH, mDay-1);
strbeforedate = mDateFormat.format(calDb.getTime());
curentdate = mDateFormat.format(calender.getTime());
calDb.setTime(mDateFormat.parse(strbeforedate));
calender.setTime(mDateFormat.parse(curentdate));
String mydate = "2013.03.14 03:11";
String mdatetime = "";
deletepath = new ArrayList<String>();
try{
// here your matching goes and pass date here
matchd.setTime(mDateFormat.parse(mdatetime));
long diff = calDb.getTimeInMillis() - calender.getTimeInMillis();
long matchdiff = matchd.getTimeInMillis() - calender.getTimeInMillis();
if(diff < matchdiff){
// do your work here
}else{
// do your else work here
}
}catch(Exception e){
e.printStackTrace();
}
}
}catch(Exception e){
e.printStackTrace();
}
}
I have converted date format in milliseconds and time format in milliseconds. I am getting current time in more than 13 digits. CurrentTime= 1357755780000, StartingTime=1357602840, EndingTime=1357756140
But when I do comparison in below code, the if part is not executed, only the else part is executed.
Is there any mistake in my code? I want to make currentTime in 10 digits. So I think, conversion of date format to milliseconds is wrong.
String toParse = getDateorTime(1) + " " + getDateorTime(2);
long currentTime=0,startingTime=0,endingTime=0,milliseconds=0;
try
{
dateFormater = new SimpleDateFormat("yyyy/MMM/dd hh:mm");
Date date = null;
try {
date = dateFormater.parse(toParse);
date.setTime(milliseconds);
}catch (Exception e) {
System.out.println("\n Error in date parsing"+e.toString());
}
currentTime = (date.getTime());
start=Long.parseLong((cursor.getString(5).trim()));
end=Long.parseLong((cursor.getString(6).trim()));
}catch (ParseException pe) {
pe.printStackTrace();
}
if((currentTime>=startingTime)&&(currentTime<=endingTime))
{
//
}
Based on your examples, you actually have startingTime and endingTime in SECONDS, while you're comparing it to currentTime in MILLISECONDS. Simply multiply the second-times by 1,000, like so:
if((currentTime>=startingTime*1000L)&&(currentTime<=endingTime*1000L))
Simply divide by 1000
Calendar cal = Calendar.getInstance();
System.out.println(cal.getTimeInMillis()/1000);
Convert the long values to string and if length is >10 simply substring the value (0,10) and then you can use string .equals too or covert them back to long for comparison .